The light-emitting diode (LED) is a semiconductor device producing light. The illumination is emitted when the electrons carry the current passing through LED, and the performance of LEDs is better than other light sources without doubt. In order to increase the manufacturing automation and to protect chips of LEDs, LEDs can be mounted directly onto the surface of printed circuit board (PCB), which is known as SMD LED.

A surface mounted device LED (SMD LED) is LED mounted on the PCB without using wires by the way of surface-mount technology (SMT). A SMD LED is a solid-state semiconductor device that converts electricity into illumination directly. One SMD LED is composed of five materials, including bracket, solid die bond, LED chip, gold wire, and epoxy.

A SMD LED is known for its parallelepiped shape, which is called LED chip. The colors of the LED chips are yellow and orange, generating warm or cold white lights. The chip of SMD LED contains the emitting areas inside, and the whole SMD LED chip is packaged with epoxy resin or silicone.

On the other hand, the core of the SMD LED is a semiconductor chip that is fixed on the bracket. One end of the bracket is the negative electrode, and the other end is connected to the positive electrode of the power supply.

In addition, the size of the SMD LED has the greatest influence on the brightness and power consumption of the lighting device. The larger the device, the higher the brightness level.

From the application aspect, more and more LEDs we used in our metal flashlight, headlight, portable worklight, camping lanterns, indoor lights and spotlight are SMD LED. If you have any plans to develop some lighting products using SMD LED, you can contact us at any time through email or phone calls.


Post time: Feb-09-2023